GJ.35, with (reconstructed) rectangular datestamp of RENCA (SAN LUIS), excellent quality (Image)

GJ.45, 1877 Provisional 1c. on 5c., BLOCK OF 4 mint with full original gum, the top stamps very lightly hinged, and the bottom stamps MNH, very fresh, excellent quality, signed by Victor Kneitschel on back, catalog value US$500 (Image)

GJ.97, Large used block of 60 stamps, excellent quality! (Image)

GJ.109, 1889 8c. Rivadavia, trial color PROOFS, 5 blocks of 4 printed on card, in red-rose, claret-rose, carmine, cerise-carmine and lilac-rose, VF quality! (Image)

GJ.135/6, 1892 Discovery of America 400 years, cmpl. set of 2 values in SHEETS OF 50 EXAMPLES, MNH, very fine quality and very rare! (Image)

GJ.135/136, 1892 Discovery of America, cmpl. set of 2 values, DIE PROOFS along with the drecree of the issue printed on card, the 2c. of very fine quality, the other one with some minor defects, rare! (Image)

GJ.135/136, 1892 Discovery of America 400 years (Ships), 7 different TRIAL COLOR PROOFS (4 of 2c. and 3 of 5c.) printed on card, VF quality, rare! (Image)

GJ.137 + other values, 1892 multiple die proof with values: 2c., 1c., without value and ½c., printed in black on very thin and lightly laid paper numbered "R.A.-6", tiny cut at left margin, excellent appearance, very rare! (Image)

GJ.299, 1908 1P. San Martín in oval, block of 4 in VERY dark blue, excellent quality (2 stamps MNH) (Image)

GJ.316 + 316a + 316b + 316c + 316d, 1911 Sarmiento, complete sheet of 50 stamps, including the 4 varieties: "Right 5 with spot" (position 6, GJ.316d), "Left 5 with serif" (position 14, GJ.316a), "Right 5 straight" (position 16, GJ.316c), and "Left 5 with thick foot" (position 39, GJ.316b), and other uncatalogued varieties. Catalogue value US$104 + 50% (MNH) (Image)

GJ.370, 20c. ultramarine, MNH, absolutely superb example! Impeccable, fresh, with intact gum, beautiful color, as fresh and perfect as the day it was printed! Catalog value US$35 + 50% (MNH) (Image)

GJ.428, block of 4 with rare cancel of MORSE (Buenos Aires), very nice! (Image)

GJ.526, 2c. Mitre franking ALONE a cover used in Buenos Aires in 1921, VF! (Image)

GJ.542, 5c. Postal Congress with watermark printed on front, perforation 13½, fantastic and striking corner block of 4, MNH, excellent and spectacular! (Image)

GJ.594EHB, 1924 ½c. San Martín, block of 12 with white HORIZONTAL GUTTER, probably the LARGEST MULTIPLE, one gutter with small thin and the rest with light adherence from the album, catalog value US$1,500, good opportunity! (Image)

GJ.613, block of 4 of 2c. San Martín printed on RIBBED PAPER, as fresh and impeccable as the day it was printed, excellent! Catalog value US$160 + 50% (MNH) (Image)

GJ.756, 25c. Plowman, block of 9 with VARIETY: Shifted colors, it appears to be a double impression, MNH, excellent! (Image)

GJ.766, 25c. Plowman printed on chalky paper, IMPERFORATE PAIR, MNH, excellent quality! (Image)

GJ.779d, 2P. Fruit on national unsurfaced paper, fantastic corner block of 16 with variety: DOUBLE IMPRESSION OF THE CENTER, spectacular! (Image)

GJ.827, 1939 50c. Nahuel Huapí lake and Bonete mount, PROOF in the issued color printed on paper with several impressions on back (overlapping, of different stamps of the period), rare! (Image)

GJ.876A, 1P. Map with Antarctica, BLACK FRAME variety, fantastic corner block of 6 with sheet number, possibly the largest multiple, superb and rare! (Image)

GJ.1037dCD, 1954/7 20c. Brown type B, gaufré paper ('gofrado') and WITH LABEL AT RIGHT, VF quality! (Image)

GJ.1106, 1958 2P. Transmission of Presidential Power (flags), 4 different DIE PROOFS printed on paper of glazed front, excellent quality (one with small wrinkles), extremely rare! (Image)

GJ.1127, 1959 1P. Horse, block of 4 with VERY SHIFTED PERFORATION, spectacular, excellen! (Image)

GJ.1151b, 1959 Basketball, corner block of 6, the stamp on position 31 with VARIETY "base of the basket broken", VF! (Image)